Question

If $a=\frac{\sqrt{6}+\sqrt{5}}{\sqrt{6}-\sqrt{5}}$ and $b=\frac{\sqrt{6}-\sqrt{5}}{\sqrt{6}+\sqrt{5}}$ then $\frac{1}{a^2}+\frac{1}{b^2}$ is equal to :

• A. 480
• B. 482
• C. 484
• D. 486

Answer 1

Answer: (B)

Correct answer is (b) 482